2,472 research outputs found

    Assessing the long-term effects of conditional cash transfers on human capital : evidence from Colombia

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    Conditional cash transfers are programs under which poor families get a stipend provided they keep their children in school and take them for health checks. Although there is significant evidence showing that they have positive impacts on school participation, little is known about the long-term impacts of the programs on human capital. This paper investigates whether cohorts of children from poor households that benefited up to nine years from Familias en Acción, a conditional cash transfer program in Colombia, attained more school and performed better on academic tests at the end of high school. Identification of program impacts is derived from two different strategies using matching techniques with household surveys, and regression discontinuity design using a census of the poor and administrative records of the program. The authors show that, on average, participant children are 4 to 8 percentage points more likely than nonparticipant children to finish high school, particularly girls and beneficiaries in rural areas. Regarding long-term impact on tests scores, the analysis shows that program recipients who graduate from high school seem to perform at the same level as equally poor non-recipient graduates, even after correcting for possible selection bias when low-performing students enter school in the treatment group. Although the positive impacts on high school graduation may improve the employment and earning prospects of participants, the lack of positive effects on test scores raises the need to further explore policy actions to couple the program's objective of increasing human capital with enhanced learning.Education For All,Tertiary Education,Primary Education,Secondary Education,Teaching and Learning

    Assessing the Long-term Effects of Conditional Cash Transfers on Human Capital: Evidence from Colombia

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    Conditional Cash Transfers (CCT) are programs under which poor families get a stipend provided they keep their children in school and take them for health checks. While there is significant evidence showing that they have positive impacts on school participation, little is known about their long-term impacts on human capital. In this paper we investigate whether cohorts of children from poor households that benefited up to nine years from Familias en Acción, a CCT in Colombia, attained more school and performed better in academic tests at the end of high school. Identification of program impacts is derived from two different strategies using matching techniques with household surveys, and regression discontinuity design using census of the poor and administrative records of the program. We show that, on average, participant children are 4 to 8 percentage points more likely than nonparticipant children to finish high school, particularly girls and beneficiaries in rural areas. Regarding long-term impact on tests scores, the analysis shows that program recipients who graduate from high school seem to perform at the same level as equally poor non-recipient graduates, even after correcting for possible selection bias when low-performing students enter school in the treatment group. Even though the positive impacts on high school graduation may improve the employment and earning prospects of participants, the lack of positive effects on the test scores raises the need to further explore policy actions to couple CCT's objective of increasing human capital with enhanced learning.Conditional Cash Transfers, school completion, academic achievement, learning outcomes

    Innovation potentials and innovative networks in European metropolitan regions: Some empirical evidence from the Metropolitan Area of Barcelona

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    Innovation potentials and innovative networks in European metropolitan regions - some empirical evidence from the Metropolitan Area of Barcelone Revilla Diez, Javier; Escorsa, Pere and Camacho, Jaime Alberto Interregional competitiveness and the relationship between technology and competitiveness has increasingly become the object of considerable interest. The stimulation of innovation potentials within a region is becoming more and more decisive in the competition between regions. Although a precise definition of the term innovation potential is difficult, there is no doubt that it is essentially the stock of knowledge and its use which makes up the innovation potential of a region. This stock, however, is an inert factor. Its conversion into innovation underlines the importance of linkages and relationships in everyday innovation processes. Firms pursue co-operative agreements in order to gain rapid access to new technologies or new markets, to benefit from economies of scale in joint R&D and production to tap into essential resources of know-how and to share risks. These linkages possess a number of features which make the network mode a distinct from inter-firm organisation. This paper attempts to give a clear documentation of current innovation activities in the metropolitan region of Barcelone between the three major actors in innovations systems: industrial firms, producer services and research institutions. The presented results are based on representative surveys within an international comparative study in three major metropolitan areas in Europe (Barcelone, Stockholm and Vienna). The results of this research will be relevant for an understanding of how and why different industries build cooperative relationships in metropolitan regions. The results will also provide insights for policy efforts that can help to nurture and expand the regional economic base in the face of the current rapid globalisation of production. Keywords: Innovation potential, Innovation networks, Metropolitan regions, Barcelona

    Embedding Words and Senses Together via Joint Knowledge-Enhanced Training

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    Word embeddings are widely used in Nat-ural Language Processing, mainly due totheir success in capturing semantic infor-mation from massive corpora. However,their creation process does not allow thedifferent meanings of a word to be auto-matically separated, as it conflates theminto a single vector. We address this issueby proposing a new model which learnsword and sense embeddings jointly. Ourmodel exploits large corpora and knowl-edge from semantic networks in order toproduce a unified vector space of wordand sense embeddings. We evaluate themain features of our approach both qual-itatively and quantitatively in a variety oftasks, highlighting the advantages of theproposed method in comparison to state-of-the-art word- and sense-based models

    Proposal to replace the work that plays the personal offered the compulsory military service in the army national

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    El problema de investigación de mercados que se presenta en este proyecto se argumenta en la necesidad que tiene el Ejército Nacional de contar con personal que se desempeñe en la seguridad de los batallones territoriales de las armas, batallones de servicios y bases además de las establecidas en la ley 48 de 1993, donde se destacan las actividades de bienestar social en beneficio de la comunidad y tareas para la preservación del medio ambiente y la conservación ecológica, de suerte que a éstas actividades deben ser destinados los jóvenes que prestan el servicio militar obligatorio en cualquiera de sus modalidades.The problem of market research presented in this project argues the need for the Army to have personnel working in the security of the territorial battalions of arms battalions services and databases in addition to those set out in law 48 of 1993, highlighting the social welfare activities for the benefit of the community and work for environmental protection and ecological conservation, so that these activities should be aimed youth performing compulsory military service all its forms

    Morphological abnormalities in a population of Pleurodeles waltl (Caudata: Salamandridae) from southwestern Spain

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    Prevalence of morphological abnormalities usually is less than 5% in most amphibian populations (Ouellet et al. 1997, Vandenlangenberg et al. 2003, Mester et al. 2015). Morphology is closely related to whole-organism performance in amphibians (Zamora-Camacho 2018, Zamora- Camacho and Aragón 2019a), and thus, is under strong selection (Watkins 1996). Therefore, this low frequency likely reflects the negative effects of abnormalities on whole-organism performance (Zamora-Camacho and Aragón 2019b). However, amphibian populations are experiencing an alarming increase in morphological abnormality rates worldwide (Lanoo 2008, Johnson and Bowerman 2010, Laurentino et al. 2016). Amongst these, the most common are limb malformations, such as misshapen or fused limbs, and missing, or presence of extra limbs and toes (Harris et al. 2008, Johnson and Bowerman 2010, Reeves et al. 2013).The author was partially supported by a Juan de la Cierva-Formación postdoctoral fellowship from the Spanish Ministerio de Economía, Industria y Competitividad

    DEVELOPMENT AND CALIBRATION OF A GLOBAL GEOMETRIC DESIGN CONSISTENCY MODEL FOR TWO-LANE RURAL HIGHWAYS, BASED ON THE USE OF CONTINUOUS OPERATING SPEED PROFILES

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    Road safety is one of the most important problems in our society. It causes hundreds of fatalities every year worldwide. A road accident may be caused by several concurrent factors. The most common are human and infrastructure. Their interaction is important too, which has been studied in-depth for years. Therefore, there is a better knowledge about the driving task. In several cases, these advances are still not included in road guidelines. Some of these advances are centered on explaining the underlying cognitive processes of the driving task. Some others are related to the analysis of drivers’ response or a better estimation of road crashes. The concept of design consistency is related to all of them. Road design consistency is the way how road alignment fits drivers’ expectancies. Hence, drivers are surprised at inconsistent roads, presenting a higher crash risk potential. This PhD presents a new, operating speed-based global consistency model. It is based on the analysis of more than 150 two-lane rural homogeneous road segments of the Valencian Region (Spain). The final consistency parameter was selected as the combination of operational parameters that best estimated the number of crashes. Several innovative auxiliary tools were developed for this process. One example is a new tool for recreating the horizontal alignment of two-lane rural roads by means of an analytic-heuristic process. A new procedure for determining road homogeneous segments was also developed, as well as some expressions to accurately determine the most adequate design speed. The consistency model can be integrated into safety performance functions in order to estimate the amount of road crashes. Finally, all innovations are combined into a new road design methodology. This methodology aims to complement the existing guidelines, providing to road safety a continuum approach and giving the engineers tools to estimate how safe are their road designs.Camacho Torregrosa, FJ. (2015). DEVELOPMENT AND CALIBRATION OF A GLOBAL GEOMETRIC DESIGN CONSISTENCY MODEL FOR TWO-LANE RURAL HIGHWAYS, BASED ON THE USE OF CONTINUOUS OPERATING SPEED PROFILES [Tesis doctoral no publicada]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/48543TESI

    Mathematical Modeling of the Mojave Solar Plants

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    Competitiveness of solar energy is one of current main research topics. Overall efficiency of solar plants can be improved by using advanced control strategies. To design and tuning properly advanced control strategies, a mathematical model of the plant is needed. The model has to fulfill two important points: (1) It has to reproduce accurately the dynamics of the real system; and (2) since the model is used to test advanced control strategies, its computational burden has to be as low as possible. This trade-off is essential to optimize the tuning process of the controller and minimize the commissioning time. In this paper, the modeling of the large-scale commercial solar trough plants Mojave Beta and Mojave Alpha is presented. These two models were used to test advanced control strategies to operate the plants.Comisión Europea OCONTSOLAR 78905
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